poll_updates still needs to return when there are changes in order to update the UI

src/buffers/log.rs

@@ -64,7 +64,7 @@ impl Buffer for LogBuffer {
     BufferId::Log
   }
 
-  async fn poll_updates(&mut self) {
+  async fn poll_updates_once(&mut self) {
     let line = self
       .receiver
       .recv()